132 lines
3.5 KiB
JavaScript
132 lines
3.5 KiB
JavaScript
/**
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* SMPP Wrapper
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*
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* Error codes: http://www.activexperts.com/activsms/sms/smpperrorcodes/
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*/
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'use strict';
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var log = require('winston'),
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merge = require('utils-merge'),
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smpp = require('smpp');
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/**
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* Set up SMPP server
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*
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* The option "checkUserAndPass" should be a function, taking three parameters: username, password and callback(err)
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*
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* @param obj options
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* * port - what port to bind to, defaults to 2775
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* * checkUserAndPass - to require username and password to bind
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* to this server this should be a function, taking three
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* parameters: username, password and callback(err)
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* * timeout - number of ms before the link should be considered dead. Defaults to 30000 (30 sec)
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*
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*/
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exports.server = function(options) {
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options = merge({
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'port': 2775,
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'checkUserAndPass': false,
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'timeout': 30000
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}, options);
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smpp.createServer(function(smppSession) {
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var loggedIn = false,
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killTimer;
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log.debug('larvitsmpp: server() - server session started');
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function resetKillTimer() {
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log.silly('larvitsmpp: server() - Resetting the kill timer');
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if (killTimer) {
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clearTimeout(killTimer);
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}
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killTimer = setTimeout(function() {
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log.warn('larvitsmpp: server() - Closing session due to timeout');
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smppSession.close();
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}, options.timeout);
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}
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resetKillTimer();
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/**
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* Set logged in to true
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*/
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function login(pdu) {
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loggedIn = true;
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smppSession.send(pdu.response({
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'command_status': smpp.ESME_ROK
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}));
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smppSession.resume();
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}
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/**
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* General bind function for bind_receiver, bind_transmitter and bind_transceiver
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*
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* @param obj pdu
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*/
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function bindGeneral(pdu) {
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if (options.checkUserAndPass instanceof Function) {
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// We pause the smppSession to prevent further incoming pdu events,
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// Untill we authorize the smppSession with some async operation.
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smppSession.pause();
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log.debug('larvitsmpp: server() - Checking username and password');
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options.checkUserAndPass(pdu.system_id, pdu.password, function(err) {
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if (err) {
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log.warn('larvitsmpp: server() - Wrong username or password. Username: "' + pdu.system_id + '"');
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smppSession.send(pdu.response({
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'command_status': smpp.ESME_RBINDFAIL
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}));
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smppSession.close();
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loggedIn = false;
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return;
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}
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log.debug('larvitsmpp: server() - Username and password is ok');
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login(pdu);
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smppSession.resume();
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});
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} else {
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login(pdu);
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}
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}
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smppSession.on('error', function() {
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log.error('larvitsmpp: server() - smppSession error!', arguments);
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});
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smppSession.on('pdu', function(pdu) {
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log.silly('larvitsmpp: server() - Received command "' + pdu.command + '"');
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resetKillTimer();
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if (pdu.command === 'bind_receiver' || pdu.command === 'bind_transmitter' || pdu.command === 'bind_transceiver') {
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bindGeneral(pdu);
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} else if (pdu.command !== 'enquire_link') {
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if (loggedIn) {
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log.error('larvitsmpp: server() - Unkown command!', pdu);
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console.log('PDU!!!!');
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console.log(arguments);
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} else {
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log.warn('larvitsmpp: server() - Not logged in but trying to send non-bind command');
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smppSession.send(pdu.response({
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'command_status': smpp.ESME_RSERTYPUNAUTH
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}));
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}
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}
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});
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smppSession.on('enquire_link', function(pdu) {
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log.silly('larvitsmpp: server() - Enquire_link - client heart beat.');
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smppSession.send(pdu.response({
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'command_status': smpp.ESME_ROK
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}));
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});
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}).listen(options.port);
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}; |